Page:Popular Science December 1931.djvu/145

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THE UNIVERSITY OF CHICAGO 651 ELLIS HALL CHICAGO, ILL. m on, the PIANO ACCOR.DION LEARN TO PLAY BY NOTE Piano Violin Guitar Saxophono Organ Uliulele Tenor Banjo Hawaiian Guitar Piano Accordion Or Any Othtr I natrumtnt Rsadlns and playing of music made downright simple by remarttaM* horn* study method pNTERTAIX at parties. ^ Do solo and specialty work in a danre orchestra. Work over the "ilr." Learn 10 play the extremely popular Piano .rcordion, or any other instrument. throuKh 8 thorouRhb" t<?sted method that has ania7i<d over 600,0f)0 people by its utter simplicity. No trtek music— you ptay ■<■- tuMl not«B,!ei»rm-d quickly Hirht n hiime. Nn t*acner Lonou.t exercises. 1 your r leamins Bwraicvn only n few c-enta a day no mattrr which inatrumrnl you Brlwt. Your copy of our!• re« Bimli, describ- inK this enjoyable way of Iparn- inif muair. and a Fre« Drmon- 6tration Lesson ar« yoUDi for th<^ askfnii. SItnpty mall (coupon hfn no«d**d. cash or crMlt. Write trnw. below. Instruments «upp1f(Hl . . . U. S. School of Mu»lc, 812 Brunswick BldK.. New York City. U. S. SCHOOL OF MUSIC, 812 Brunswick Bids., New YoHt City. Send me your amazlne free Iiook. "Musle Lessons in Your Own Home." with Introdunlon by Dr. Frank Crane: also Free Demonstration Lesson. This docs not put me utider any obligation. Name Address Rave you Instrument Instrument?.. DOPING A CAR FOR COLD WEATHER (Continued from paRe 74) wouldn't take a chance. If you're going to use alcohol at all, get the denatured grain alcohol. You never can tell when you'll get into a traffic jam on an extra warm day in winter with the wind just right and have the motor boil a lot of wood alcohol fumes into the car. Even the fumes of wood alcohol can do a lot of damage if you breathe enough of 'em. "As for you. Jack," Gus continued, "if you use alcohol of any kind when you've got a perfectly good radiator that doesn't leak, you're wasting time and taking a chance on damaging your car. You need glycerine or ethylene glycol. I've got 'em both in stock. Neither one will boil away or give you any trouble. Which shall it be?" "How should I know?" asked Jack. "Which is best? Does one cause more cor- rosion than the other or something?" "Far as I can see there's no choice," Gus replied. 'WW the good brands are treated to prevent corrosion. As a matter of fact I think there'll be less corrosion with either than you get with plain water." "W'hat I can't understand," Jack said, "is why we should have so many new fangled anti-freezes on the market now when a few years ago everybody used alcohol and got good results." "The main reason for that," Gus explained, "is the kind of motors we have in cars now- adays. Higher compression, and more power out of the same size cylinders naturally means more heat to be carried away by the radiator. Most motors now run a lot hotter than the oldtimers. .lcohol boils before many modern motors get up to their right running tempera- ture. If you fix 'em so they stay cold enough not to boil away the alcohol, then you're letting yourself in for a lot of other troubles — mostly extra wear caused by excessive crankcase dilution and poor lubrication." "How do you mean fix 'em?" Jack asked. "TE.^VE the radiator uncovered, for one M—J thing, or if you've got a thermostat or an automatic shutter control, adjust it so it doesn't keep the motor so warm." "If you do that, how do you keep the car warm?" Danny asked. "My car is fitted with a hot water heater." "The answer to that is buy yourself a pair of fur lined boots," Gus smiled, "or else put in a heater that works directly from the exhaust pipe. The exhaust stays hot even when the motor is nearly cold." "Gosh!" exclaimed Danny. "I think I'll have a new radiator core put in. What's the sense of fussing around all winter, worrying about the motor freezing into the bargain? Maybe we won't get new cars in the spring and I'd have a new radiator to buy then anyhow." "I never did think much of makeshift jobs," Gus grinned. NEW INSTRUMENT SHOWS WHICH ROOM IS SUNNY Which rooms of a house will be sunny may be determined, even before the house is built, by an instrument perfected in Eng- land. Designed for architects and others, it consists of a base like a sundial and a small ball on a string representing the sun and its rays. By setting the base upon a house plan and moving the "sun" with the taut string along an inclined guide of accurate astronom- ical design, the hours of sunlight for any door, window, or lawn are found at once for any time of the vear. 140 POPULAR SCIENCE MONTHLY